CN108127342A - A kind of preparation process of high-precision copper and copper alloy cut deal - Google Patents
A kind of preparation process of high-precision copper and copper alloy cut deal Download PDFInfo
- Publication number
- CN108127342A CN108127342A CN201711310400.2A CN201711310400A CN108127342A CN 108127342 A CN108127342 A CN 108127342A CN 201711310400 A CN201711310400 A CN 201711310400A CN 108127342 A CN108127342 A CN 108127342A
- Authority
- CN
- China
- Prior art keywords
- finished product
- belt
- rolling
- annealing
- finish rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The preparation process of a kind of high-precision copper and copper alloy cut deal, process flow steps are:Dispensing → melting → covering → casting → ingot casting heating → hot rolling → milling face → pre- finish rolling → pre- finish rolling annealing → finished product rolling → finished product aligning → finished product cleaning and passivation → finished product drying → finished product shearing → packaging and storage；The milling face of the present invention uses low speed milling face, and the pad non-woven fabrics after washing one's face, and prevents from abrading, and reduces surface defect, and the shearing of finished product length changes shearing property pattern：Become calculating shearing finished weight from the cropping place of cutting calculating shearing finished weight is started in flying shear, every batch of material volume has more the finished product of 10m or so；Plank is cut in thicker strip and is cut to length, and is sawed by precision come sawing finished width, improves the width accuracy and production efficiency of cut deal；The present invention solves the problems, such as that existing cut deal occurs abrading in process of production, scratches, chews, greatly improves the precision and production efficiency of the apparent size of cut deal by adjusting technique processing flow.
Description
Technical field
The present invention relates to non-ferrous metals processing field more particularly to the preparation works of a kind of high-precision copper and copper alloy cut deal
Skill.
Background technology
High-precision copper and copper alloy cut deal are the products that copper coin material is in more than 3.0mm, have highly conductive, high heat conduction,
The characteristics of high intensity, is constantly used in the industries such as nuclear energy, electric power, rail traffic, precise electronic；It is thick in high-precision copper and copper alloy
Surface quality and the appearance and size requirement of plate are significantly larger than the range of national regulations.
At present, domestic more than 3.0mm copper and copper alloy cut deal mainly use the blank of block formula working system, and cleaning is generally adopted
The method impregnated with the handling of block formula there is the inconvenient for operation, energy and high material consumption, adjusts the problems such as frequent, of high cost；
Domestic Plate band belt working system is that the finished product carried out by cutter row is sheared, blank largely using after cold rolling not
Annealed thick copper strips, surface have retained remaining lotion, oxidation dust and other dirts, if copper coin material is cleaning dirty, warp
Remaining solid particle and carbide will be formed on the surface of copper strips after crossing shearing, these residue copper strip surface qualities, shadow
Ring high-end customer normal use, since band is thicker, intensity is big, in shear history occur abrade, scratch, chew situation compared with
It is more, strong influence is caused using processing to the follow-up of client；Copper alloy cut deal band how to be made to reduce in process of production
Surface tear agrees wound, improves apparent size precision, becomes insoluble technical barrier for a long time.
In view of the foregoing, the preparation process of a kind of high-precision copper and copper alloy cut deal is now developed.
Invention content
The purpose of the invention is to overcome deficiency of the prior art, a kind of high-precision copper and copper alloy cut deal are provided
Preparation process, by adjusting technique processing flow, solve existing cut deal and occur abrading in process of production, scratch, gnaw
The problem of hindering greatly improves the precision and production efficiency of the apparent size of cut deal.
The present invention to achieve these goals, adopts the following technical scheme that：A kind of high-precision copper and copper alloy cut deal
Preparation process, process flow steps are:Dispensing → melting → covering → casting → ingot casting heating → hot rolling → milling face → pre- finish rolling
→ pre- finish rolling annealing → finished product rolling → finished product aligning → finished product cleaning and passivation → finished product drying → finished product is sheared → are packaged into
Library；
The first step, dispensing：Using the combination of cathode copper or zinc ingot metal one or two therein, smelting furnace is put into；
Second step, melting：Melting, smelting temperature are carried out in electric induction furnace：1100~1300 DEG C；
Third walks, covering：Melt liquid level in stove is covered using charcoal in fusion process；
4th step, casting：To the liquid ingot casting after melting, casting speed is 3~10 ms/h；
5th step, ingot casting heating：Ingot casting heating, 855~890 DEG C of heating temperature are carried out by walking beam furnace；
6th step, hot rolling：On equipment of hot rolling to after heating ingot casting carry out cogging hot rolling, hot-rolled billet general working rate >=
90%；
7th step, milling face：Made-up belt milling face is carried out on Double Milling milling machine, controls milling face velocity as 4~7m/min, band milling
Pad non-woven fabrics behind face prevents from abrading, and reduces surface defect；
8th step, pre- finish rolling：Pre- finish rolling is carried out to the made-up belt behind milling face on blooming mill；
9th step, pre- finish rolling annealing：Intermediate annealing is carried out to the made-up belt after pre- finish rolling on annealing furnace, is moved back using bell furnace
Fire, 400~560 DEG C of annealing temperature, annealing time 4~10 hours；It is protected in annealing using 75% high nitrogen atmosphere；
Tenth step, finished product rolling：Made-up belt after being annealed with milling train to pre- finish rolling carries out finish rolling to finished product made-up belt, finished product rolling
Last a time is rolled using small working modulus 9%~16% and 790~1210Kg of constant-tension, controls thickness deviation and template,
Emulsion device, and pad non-woven fabrics are removed in last a time use, prevents from aoxidizing and abrade；
11st step, finished product aligning：Finished product aligning is carried out to finished product made-up belt, finished product aligning is divided into pre-straightening and fine straightening,
Fine straightening is according to thickness according to coefficient adjustment drafts up to specification；
12nd step, finished product cleaning and passivation：Finished product is cleaned with two pairs of brushes according to the method that specified angle is sprayed water to align
Made-up belt surface afterwards；Band corrosive chameleon is prevented with the phenylpropyl triazole solution of low concentration, the phenylpropyl triazole of low concentration is molten
Liquid is made of passivating solution and deionized water proportioning, and operating temperature is maintained at 50~90 DEG C；
13rd step, finished product drying：After Cleaning and Passivation being dried using the high-pressure blast of second gear power or third gear power
Made-up belt surface；
14th step, finished product shearing：It is traditional flying shear start calculate shearing finished weight become from the cropping place of cutting meter
Shearing finished weight is calculated, the made-up belt after drying is cut at the cropping place of cutting and meets defined length, the band of length will have been sheared
Base stacks, and is sawed into the plank for having sheared length with precision saw and meets defined width；
15th step, packaging and storage：Finished product cut deal is through packaging and storage after the assay was approved.
The beneficial effects of the invention are as follows：The milling face of the present invention uses low speed milling face, and the pad non-woven fabrics after washing one's face, and prevents
Scratch, reduces surface defect, and the shearing of finished product length changes shearing property pattern：Finished weight is sheared starting to calculate in flying shear
Become calculating shearing finished weight from the cropping place of cutting, every batch of material volume has more the finished product of 10m or so；Optimize technique：By non-600mm,
The plank of 1000mm wide is cut in thicker strip to be cut to length, and by precision saw come sawing finished width, the width for improving cut deal is smart
Degree and production efficiency；The cut deal thickness specification that is produced of the present invention up to 3.0~10.0mm, width specifications up to 650~
1000mm, dimensional tolerance：Dimensional tolerance precision greatly improves, and is compared with the apparent size tolerance of existing cut deal：
The present invention by adjusting technique processing flow, solve existing cut deal and occur abrading in process of production, scratch,
The problem of chewing greatly improves the precision and production efficiency of the apparent size of cut deal.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is process flow chart.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to embodiment：
Embodiment 1
The TU1 that a kind of specification is 8.0*1000*2000mm is produced, it is comprehensive for the conductive frame product of power control cabinet
Energy conduction is good, surface quality is good, and tolerance dimension requirement is tight；
Its technology of copper coin requires：
The trade mark:TU1
Copper coin specification：8.0×1000×1500mm
State：Hard state
Performance requirement：Rm≥295MPa
Tolerance：Thickness deviation 0-0.2mm, width tolerance ± 2mm
The first step, dispensing：Using cathode copper, smelting furnace is put into；
Second step, melting：Melting, smelting temperature are carried out in electric induction furnace：1130~1200 DEG C；
Third walks, covering：Melt liquid level in stove is covered using charcoal in fusion process；
4th step, casting：To the liquid ingot casting after melting, it is 4~8 ms/h to make speed；
5th step, ingot casting heating：Ingot casting heating, 860~880 DEG C of heating temperature are carried out by walking beam furnace；
6th step, hot rolling：On equipment of hot rolling to after heating ingot casting carry out cogging hot rolling, hot-rolled billet general working rate >=
90%；
7th step, milling face：Made-up belt milling face is carried out on Double Milling milling machine, controls milling face velocity as 5~6m/min, band milling
Pad non-woven fabrics behind face prevents from abrading, and reduces surface defect；
8th step, pre- finish rolling：Pre- finish rolling is carried out to the made-up belt behind milling face on blooming mill；
9th step, pre- finish rolling annealing：Intermediate annealing is carried out to the made-up belt after pre- finish rolling on annealing furnace, is moved back using bell furnace
Fire, 420~450 DEG C of annealing temperature, annealing time 5~8 hours；It is protected in annealing using 75% high nitrogen atmosphere；
Tenth step, finished product rolling：Made-up belt after being annealed with milling train to pre- finish rolling carries out finish rolling to finished product made-up belt, finished product rolling
Last procedure is rolled using small working modulus 10%~15% and 800~1200Kg of constant-tension, controls thickness deviation and plate
Type removes emulsion device, and pad non-woven fabrics in last a time use, prevents from aoxidizing and abrade；
11st step, finished product aligning：Finished product aligning is carried out to finished product made-up belt, finished product aligning is divided into pre-straightening and fine straightening,
Fine straightening is according to thickness according to coefficient adjustment drafts up to specification；
12nd step, finished product cleaning and passivation：Finished product is cleaned with two pairs of brushes according to the method that specified angle is sprayed water to align
Made-up belt surface afterwards；Band corrosive chameleon is prevented with the phenylpropyl triazole solution of low concentration, the phenylpropyl triazole of low concentration is molten
Liquid is made of passivating solution and deionized water proportioning, and operating temperature is maintained at 55~85 DEG C；
13rd step, finished product drying：The made-up belt surface after Cleaning and Passivation is dried using the high-pressure blast of third gear power；
14th step, finished product shearing：It is traditional flying shear start calculate shearing finished weight become from the cropping place of cutting meter
Shearing finished weight is calculated, the made-up belt after drying is cut at the cropping place of cutting and meets defined length, the band of length will have been sheared
Base stacks, and is sawed into the plank for having sheared length with precision saw and meets defined width；
15th step, packaging and storage：Finished product cut deal is through packaging and storage after the assay was approved.
Embodiment 2
The H65 that a kind of specification is 6.1 × 1000 × 3000mm is produced, for building decoration, surface quality requirements are good, public
Difference size requirement is tight；
Its technology of copper coin requires：
The trade mark:H65
Copper coin specification：6.1×1000×3000mm
State：Soft state (M)
Performance requirement：Rm >=300MPa A11.3 >=50%
Tolerance：Thickness deviation 0-0.2mm, width tolerance ± 1mm
The first step, dispensing：Using cathode copper, zinc ingot metal input smelting furnace；
Second step, melting：Melting, smelting temperature are carried out in electric induction furnace：1100~1220 DEG C；
Third walks, covering：Melt liquid level in stove is covered using charcoal in fusion process；Converter is carried out after covering,
Preparing to during holding furnace converter, melt flame 2~4 times in smelting furnace, after the completion of smelting furnace flame, by what is melted in smelting furnace
Copper liquid is transferred to holding furnace；Subordinate cover, 150~200mm of cladding thickness are carried out to melt using charcoal in holding furnace；
4th step, casting：To the liquid ingot casting after melting, it is 4~9 ms/h to make speed；
5th step, ingot casting heating：Ingot casting heating, 865~880 DEG C of heating temperature are carried out by walking beam furnace；
6th step, hot rolling：On equipment of hot rolling to after heating ingot casting carry out cogging hot rolling, hot-rolled billet general working rate >=
90%；
7th step, milling face：Made-up belt milling face is carried out on Double Milling milling machine, controls milling face velocity as 5~6m/min, band milling
Pad non-woven fabrics behind face prevents from abrading, and reduces surface defect；
8th step, pre- finish rolling：Pre- finish rolling is carried out to the made-up belt behind milling face on blooming mill；
9th step, pre- finish rolling annealing：Intermediate annealing is carried out to the made-up belt after pre- finish rolling on annealing furnace, is moved back using bell furnace
Fire, 510~540 DEG C of annealing temperature, annealing time 6~9 hours；It is protected in annealing using 75% high nitrogen atmosphere；
Tenth step, finished product rolling：Made-up belt after being annealed with milling train to pre- finish rolling carries out finish rolling to finished product made-up belt, finished product rolling
Last procedure is rolled using small working modulus 10%~15% and 800~1200Kg of constant-tension, controls thickness deviation and plate
Type removes emulsion device, and pad non-woven fabrics in last a time use, prevents from aoxidizing and abrade；
11st step, finished product aligning：Finished product aligning is carried out to finished product made-up belt, finished product aligning is divided into pre-straightening and fine straightening,
Fine straightening is according to thickness according to coefficient adjustment drafts up to specification；
12nd step, finished product cleaning and passivation：Finished product is cleaned with two pairs of brushes according to the method that specified angle is sprayed water to align
Made-up belt surface afterwards；Band corrosive chameleon is prevented with the phenylpropyl triazole solution of low concentration, the phenylpropyl triazole of low concentration is molten
Liquid is made of passivating solution and deionized water proportioning, and operating temperature is maintained at 55~85 DEG C；
13rd step, finished product drying：The made-up belt surface after Cleaning and Passivation is dried using the high-pressure blast of third gear power；
14th step, finished product shearing：It is traditional flying shear start calculate shearing finished weight become from the cropping place of cutting meter
Shearing finished weight is calculated, the made-up belt after drying is cut at the cropping place of cutting and meets defined length, the band of length will have been sheared
Base stacks, and is sawed into the plank for having sheared length with precision saw and meets defined width；
15th step, packaging and storage：Finished product cut deal is through packaging and storage after the assay was approved.
Claims (2)
1. a kind of preparation process of high-precision copper and copper alloy cut deal, it is characterised in that：Process flow steps are:Dispensing → molten
Refining → covering → casting → ingot casting heating → hot rolling → milling face → pre- finish rolling → pre- finish rolling annealing → finished product rolling → finished product aligning
→ finished product cleans and passivation → finished product drying → finished product shearing → packaging and storage.
2. the preparation process of a kind of high-precision copper according to claim 1 and copper alloy cut deal, it is characterised in that：
The first step, dispensing：Using the combination of cathode copper or zinc ingot metal one or two therein, smelting furnace is put into；
Second step, melting：Melting, smelting temperature are carried out in electric induction furnace：1100~1300 DEG C；
Third walks, covering：Melt liquid level in stove is covered using charcoal in fusion process；
4th step, casting：To the liquid ingot casting after melting, casting speed is 3~10 ms/h；
5th step, ingot casting heating：Ingot casting heating, 855~890 DEG C of heating temperature are carried out by walking beam furnace；
6th step, hot rolling：On equipment of hot rolling to after heating ingot casting carry out cogging hot rolling, hot-rolled billet general working rate >=
90%；
7th step, milling face：Made-up belt milling face is carried out on Double Milling milling machine, milling face velocity is controlled as 4~7m/min, behind band milling face
Pad non-woven fabrics prevents from abrading, and reduces surface defect；
8th step, pre- finish rolling：Pre- finish rolling is carried out to the made-up belt behind milling face on blooming mill；
9th step, pre- finish rolling annealing：Intermediate annealing is carried out to the made-up belt after pre- finish rolling on annealing furnace, using cover annealing,
400~560 DEG C of annealing temperature, annealing time 4~10 hours；It is protected in annealing using 75% high nitrogen atmosphere；
Tenth step, finished product rolling：Made-up belt after being annealed with milling train to pre- finish rolling carries out finish rolling to finished product made-up belt, and finished product rolling is last
A time is rolled using small working modulus 9%~16% and 790~1210Kg of constant-tension, thickness deviation and template is controlled, most
Emulsion device, and pad non-woven fabrics are removed in a time use afterwards, prevent from aoxidizing and abrade；
11st step, finished product aligning：Finished product aligning is carried out to finished product made-up belt, finished product aligning is divided into pre-straightening and fine straightening, and essence is rectified
Taproot is according to thickness according to coefficient adjustment drafts up to specification；
12nd step, finished product cleaning and passivation：After finished product aligning being cleaned with two pairs of brushes according to the method that specified angle is sprayed water
Made-up belt surface；Prevent band corrosive chameleon with the phenylpropyl triazole solution of low concentration, the phenylpropyl triazole solution of low concentration by
Passivating solution and deionized water proportioning are formed, and operating temperature is maintained at 50~90 DEG C；
13rd step, finished product drying：The band after Cleaning and Passivation is dried using the high-pressure blast of second gear power or third gear power
Base surface；
14th step, finished product shearing：It is traditional flying shear start calculate shearing finished weight become from the cropping place of cutting calculating cut
Finished weight is cut, the made-up belt after drying is cut at the cropping place of cutting and meets defined length, the made-up belt for having sheared length is folded
It puts well, the plank for having sheared length is sawed into precision saw and meets defined width；
15th step, packaging and storage：Finished product cut deal is through packaging and storage after the assay was approved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310400.2A CN108127342B (en) | 2017-12-11 | 2017-12-11 | Preparation process of high-precision copper and copper alloy medium plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310400.2A CN108127342B (en) | 2017-12-11 | 2017-12-11 | Preparation process of high-precision copper and copper alloy medium plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108127342A true CN108127342A (en) | 2018-06-08 |
| CN108127342B CN108127342B (en) | 2020-02-18 |
Family
ID=62390152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711310400.2A Active CN108127342B (en) | 2017-12-11 | 2017-12-11 | Preparation process of high-precision copper and copper alloy medium plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108127342B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434378A (en) * | 2018-10-31 | 2019-03-08 | 温州铜丰铜业有限公司 | A kind of copper strips production technology |
| CN111604374A (en) * | 2020-05-15 | 2020-09-01 | 太原晋西春雷铜业有限公司 | Method for solving surface white spots of copper alloy strip |
| CN114101371A (en) * | 2021-11-09 | 2022-03-01 | 中铝洛阳铜加工有限公司 | Processing method of large-caliber thick-wall copper pipe for annular conduction band |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3078747A (en) * | 1957-09-17 | 1963-02-26 | British Aluminium Co Ltd | Manufacture of metal sheet or strip |
| CN101060023A (en) * | 2007-05-11 | 2007-10-24 | 中铝洛阳铜业有限公司 | A copper-clad aluminum complex cable copper strip composition and machining process |
| CN102658452A (en) * | 2011-11-17 | 2012-09-12 | 中铝洛阳铜业有限公司 | Processing method of copper strip used for copper steel composites |
| CN104259201A (en) * | 2014-07-24 | 2015-01-07 | 重庆大学 | Method for rolling high-ductility and high-scalability Mg-Al series magnesium alloy plates |
| CN104624698A (en) * | 2013-11-08 | 2015-05-20 | 青岛宏泰铜业有限公司 | Continuous roll casting technology of difficult-to-deform copper alloy plate and strip blank |
-
2017
- 2017-12-11 CN CN201711310400.2A patent/CN108127342B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3078747A (en) * | 1957-09-17 | 1963-02-26 | British Aluminium Co Ltd | Manufacture of metal sheet or strip |
| CN101060023A (en) * | 2007-05-11 | 2007-10-24 | 中铝洛阳铜业有限公司 | A copper-clad aluminum complex cable copper strip composition and machining process |
| CN102658452A (en) * | 2011-11-17 | 2012-09-12 | 中铝洛阳铜业有限公司 | Processing method of copper strip used for copper steel composites |
| CN104624698A (en) * | 2013-11-08 | 2015-05-20 | 青岛宏泰铜业有限公司 | Continuous roll casting technology of difficult-to-deform copper alloy plate and strip blank |
| CN104259201A (en) * | 2014-07-24 | 2015-01-07 | 重庆大学 | Method for rolling high-ductility and high-scalability Mg-Al series magnesium alloy plates |
Non-Patent Citations (1)
| Title |
|---|
| 娄花芬: "《铜及铜合金板带生产》", 31 December 2010 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434378A (en) * | 2018-10-31 | 2019-03-08 | 温州铜丰铜业有限公司 | A kind of copper strips production technology |
| CN111604374A (en) * | 2020-05-15 | 2020-09-01 | 太原晋西春雷铜业有限公司 | Method for solving surface white spots of copper alloy strip |
| CN111604374B (en) * | 2020-05-15 | 2022-04-05 | 太原晋西春雷铜业有限公司 | Method for solving surface white spots of copper alloy strip |
| CN114101371A (en) * | 2021-11-09 | 2022-03-01 | 中铝洛阳铜加工有限公司 | Processing method of large-caliber thick-wall copper pipe for annular conduction band |
| CN114101371B (en) * | 2021-11-09 | 2023-05-30 | 中铝洛阳铜加工有限公司 | Processing method of large-caliber thick-wall copper pipe for annular conduction band |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108127342B (en) | 2020-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102658452B (en) | Processing method of copper strip used for copper steel composites | |
| CN103060542B (en) | Manufacturing method for low expansion alloy wide and thick plate | |
| CN103343264B (en) | Braze welding type aluminum alloy materials and preparation method thereof for domestic air conditioning | |
| CN107475583A (en) | Plate aluminium alloy strips and its manufacture method in a kind of high intensity mobile phone | |
| CN105729064A (en) | Short-process high-performance oxygen-free copper strip production method | |
| CN103029377B (en) | A kind of Copper-Aluminum compound metal plate and belt aluminum substrate layer material, strip and processing method thereof | |
| CN108127342A (en) | A kind of preparation process of high-precision copper and copper alloy cut deal | |
| CN109402446A (en) | A kind of high-end frame material copper strips preparation process | |
| TW200927313A (en) | Method and apparatus for producing strips of silicon steel or multi-phase steel | |
| CN101684537B (en) | Weather resisting steel produced by strip casting and production method thereof | |
| CN101121306A (en) | Middle temperature welding multi-layer composite aluminium alloy board, belt (foil) its preparation method | |
| CN108155281A (en) | A kind of small dimension LED copper strips production technologies | |
| CN102912190A (en) | 1070 aluminum alloy explosion-proof foil and processing technology thereof | |
| CN108057999A (en) | A kind of double strong copper strips production technologies for automotive connector | |
| CN105499300A (en) | Production technology of copper strip for lock | |
| CN102719694A (en) | CuCrZr alloy material, preparation method thereof and method for preparing strips with same | |
| CN105537311A (en) | Production technology of copper strip for automobile contact | |
| CN105032974B (en) | The production method of zirconium and zircaloy band volume | |
| CN101912876B (en) | Production method of magnesium alloy plate | |
| CN108747231A (en) | A kind of production technology of lug copper strips | |
| CN101914701A (en) | Lead frame material and method for processing strip made of same | |
| CN109628803A (en) | A kind of 4017-H2X state aluminium alloy diamond plate and preparation method thereof | |
| CN102864373A (en) | Method for manufacturing stainless steel plate | |
| CN101906553A (en) | Lead frame material and processing method thereof | |
| CN106734197B (en) | A kind of manufacturing method solving technical pure titanium plate cold rolling roll banding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |